Porcupine fish, is also known as “spotted spiny puffer,” and there are approximately 15 species. They have a round, elongated body, large at the head, gradually becoming thin at the tail. Their top body coloration is olive to brown black with a white belly. There are small, dark spots all over their body and fins. they grow 3-19 inches depending on the species. The name comes from the spines that cover the skin. In the smaller species, the spines are erected permanently, while the spines in the larger species only erect when the fish is threatened and has inflated its body. They inflate their body by taking water into their stomach until they are fully inflated.
Porcupine fish generally stay in caves and recesses, peering out of the openings during the day and searching their area for food in the night. Sometimes they can be seen in grassy areas.
They generally feed at night, on mollusks, clams, oysters and other invertebrates. They move around the sea and reef floor, spurting jets of water to uncover prey. Porcupine fish have large appetites, and have only one set of teeth, which is unusual among fish.
Science has uncovered very little knowledge about the Breeding habits of this fish.